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US20030116663A1 - Agitator mill - Google Patents

Agitator mill Download PDF

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Publication number
US20030116663A1
US20030116663A1 US10/327,206 US32720602A US2003116663A1 US 20030116663 A1 US20030116663 A1 US 20030116663A1 US 32720602 A US32720602 A US 32720602A US 2003116663 A1 US2003116663 A1 US 2003116663A1
Authority
US
United States
Prior art keywords
grinding
agitator
mill according
stock
agitator mill
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/327,206
Other languages
English (en)
Inventor
Herbert Durr
Paul Eirich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maschinenfabrik Gustav Eirich GmbH and Co KG
Original Assignee
Maschinenfabrik Gustav Eirich GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maschinenfabrik Gustav Eirich GmbH and Co KG filed Critical Maschinenfabrik Gustav Eirich GmbH and Co KG
Assigned to MASCHINENFABRIK GUSTAV EIRICH GMBH & CO. KG reassignment MASCHINENFABRIK GUSTAV EIRICH GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DURR, HERBERT, EIRICH, PAUL
Publication of US20030116663A1 publication Critical patent/US20030116663A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
    • B02C17/161—Arrangements for separating milling media and ground material

Definitions

  • the invention relates to an agitator mill comprising a grinding container with a grinding chamber; and an agitator, which is disposed in the grinding chamber and provided with projecting agitating tools and the agitator axis of which is parallel to the central longitudinal axis of the grinding chamber; the agitator being drivable in rotation about the agitator axis by a drive; the grinding chamber being closed by a bottom and covered, but not pressure-sealed, by an upper covering; the grinding chamber being partially filled with auxiliary grinding bodies which are movable in a mix of grinding stock and auxiliary grinding bodies; a grinding-stock feed pipe, which opens into the grinding chamber, being provided with a grinding-stock feed pump; and a separating device for separating grinding stock and auxiliary grinding bodies from each other being provided in the grinding chamber and connected to a grinding-stock discharge pipe.
  • An agitator mill of the generic type known from U.S. Pat. No. 4,998,678 comprises a rotatably drivable grinding container, with a packing ring that serves as a splash guard being provided between the grinding container and the covering; the covering is non-rotatably disposed on the machine frame and serves as a cap.
  • These agitator mills cannot work at overpressure. Grinding-stock discharge works on the principle of overflow and unpressurized i.e., against atmospheric pressure.
  • GB 1 038 153 A teaches an agitator mill having a grinding vessel with a vertical axis, in which a rotarily drivable agitator is concentrically disposed.
  • the grinding chamber is defined upwards by a separating screen of adjustable height, by which to vary the working volume of the grinding chamber.
  • the packing density of the auxiliary grinding bodies within the grinding chamber can thus be modified.
  • the grinding stock which is supplied from below by a feed pump via a feed pipe, exits through the screen and discharges from an overflow chamber. In this way grinding intensity may be affected.
  • German utility model 70 38 335 teaches an agitator mill having a grinding container with a vertical central longitudinal axis and with an agitator arranged concentrically therein.
  • the grinding stock is supplied from below. Provision is made for a grinding-body displacement chamber of variable volume, in which a piston is displaceably disposed.
  • part of the auxiliary grinding bodies can be withdrawn into this chamber and pushed back into the grinding chamber during regular grinding. The grinding stock discharges openly on top of the grinding container.
  • this object is attained in an agitator mill of the generic type by the features which consist in that a grinding-stock discharge pump is provided in the grinding-stock discharge pipe; and in that the grinding-stock feed pump and/or the grinding-stock discharge pump are controllable. Due to the fact that not only grinding stock supply but also grinding stock discharge takes place by means of a pump and that the two pumps are, as it were, interadjustable, it is possible to modify the filling ratio of the agitator mill and thus the working volume of the grinding chamber.
  • the measures according to the invention enable part of the auxiliary grinding bodies in the grinding chamber to defy the grinding process partially or totally without being removed from the entirety of the grinding chamber because, above the separating device, there is only little intensity of agitation of the mix of grinding-stock and auxiliary grinding bodies.
  • the measures according to the invention are of special advantage in the case of agitator mills that comprise the additional features according to which the grinding container is rotatably drivable; and/or according to which the agitator is disposed eccentrically of the central longitudinal axis of the grinding container; and/or according to which the grinding-stock feed pipe opens into the grinding chamber in vicinity to the bottom.
  • the separating device may be variable radially or parallel to the axis of the agitator mill.
  • FIG. 1 is a vertical central longitudinal section of a first embodiment of an agitator mill
  • FIG. 2 is a view, on a strongly enlarged scale, of a detail of FIG. 1, showing a separating device
  • FIG. 3 is a plan view of the separating device of FIG. 2;
  • FIG. 4 is a vertical central longitudinal section of a second embodiment of an agitator mill
  • FIG. 5 is a vertical central longitudinal section of a third embodiment of an agitator mill
  • FIG. 6 is a vertical central longitudinal section of a fourth embodiment of an agitator mill
  • FIG. 7 is a plan view of the separating device of the agitator mill according to FIG. 7;
  • FIG. 8 is a section of a detail of a fifth embodiment of an agitator mill with a separating device allocated to the agitator;
  • FIG. 9 is a vertical central longitudinal section of a sixth embodiment of an agitator mill.
  • FIG. 10 is a vertical central longitudinal section of a detail of the agitator mill according to FIG. 9.
  • the agitator mill seen in FIGS. 1 to 3 comprises a substantially cylindrical grinding container 1 , the central longitudinal axis 2 of which is vertical i.e., the grinding container 1 is vertical. It is closed downwards by a bottom 3 that runs crosswise of the axis 2 . It supports itself on a machine frame 5 (roughly outlined) by means of a pivot bearing 4 that is concentric of the axis 2 i.e., the grinding container 1 is rotatable about its central longitudinal axis 2 .
  • a grinding-container driving motor 6 which is supported on the machine frame 5 , is provided as a rotary drive for the grinding container 1 ; the shaft 7 of the motor 6 runs parallel to the axis 2 , via a gear drive 8 driving the grinding container 1 in the direction of rotation 9 .
  • a pinion 10 is mounted on the shaft 7 , engaging with a gear ring 11 which is mounted on the bottom 3 of the grinding container 1 around the pivot bearing 4 . Due to the great pinion- 10 -to-gear-ring- 11 step-down ratio, the grinding container 1 can be driven at a comparatively low rotational speed.
  • An agitator 12 is disposed in the grinding container 1 , substantially and conventionally comprising an agitator shaft 13 and agitating tools 14 that are mounted thereon and stand out radially there-from.
  • the agitating tools 14 are agitating disks with penetration openings 15 .
  • the agitator shaft 13 is over-mounted in an agitator-shaft bearing 16 .
  • This bearing 16 is held in a non-rotatable, frontal covering 17 , which is supported on the machine frame 5 in a manner not shown.
  • a packing ring 19 is placed between the covering 17 and the upper edge 18 of the grinding container 1 ; consequently, it is arranged concentrically with the central longitudinal axis 2 of the grinding container 1 .
  • the packing ring 19 is not connected with the edge 18 of the grinding container 1 , because the container 1 is rotatable and the covering 17 , which serves as a cap, is arranged stationarily and detachably on the machine frame 5 .
  • the covering 17 and the packing ring 19 serve as a splash guard; the grinding container 1 is not pressure-sealed.
  • the agitator 12 is actuated by an agitator driving motor 20 , which is connected to the machine frame 5 , and the shaft 21 of which is parallel to the agitator axis 22 . Actuation is translated to the agitator shaft 13 by means of a belt drive 23 .
  • the agitator axis 22 and the central longitudinal axis 2 of the grinding container 1 are parallel to one another and misaligned by an eccentricity e.
  • a grinding-stock feed pipe 24 passes through the non-rotatable covering 17 and is held thereby, its outlet 25 being in proximity to the bottom 3 of the grinding container 1 .
  • a controllable grinding-stock feed pump 26 is arranged in the feed pipe 24 .
  • Provision is also made of a grinding-stock discharge pipe 27 which passes through an oblong hole 28 in the covering 17 , the hole 28 extending approximately radially to the agitator axis 22 . It is held in a clamping flange 29 which is supported by shims 30 on the covering 17 where it is fixable by screws 31 (roughly outlined). In every position, the clamping flange 29 covers the oblong hole 28 .
  • the inlet 32 which is positioned inside the grinding container 1 , is defined by a suction port 33 , which is arranged above the agitating tool 14 in the form of a plane solid disk 34 .
  • the solid disk 34 has no penetration openings 15 .
  • the solid disk 34 and the suction port 33 constitute a separating device 35 .
  • Located between the suction port 33 and the top side of the solid disk 34 is a suction slot 36 , the width s of which can be set by means of the shims 30 .
  • the width s of the slot 36 is always set such that the width s is distinctly smaller than the smallest diameter d of the auxiliary grinding bodies 38 which largely fill the cylindrical grinding chamber 37 that is formed in the grinding container 1 , with s ⁇ 5 0.5 d min and 2.0 mm ⁇ d ⁇ 10.0 mm applying.
  • Disposed in the grinding-stock discharge pipe 27 is an equally controllable grinding-stock discharge pump 39 .
  • a flexibly resilient pipe section 41 is arranged in the discharge pipe 27 , extending substantially radially to the axis 2 and enabling the suction port 33 to be set radially in the direction of adjustment 40 .
  • the exemplary embodiment of FIG. 4 differs from that of FIG. 2 only in that the part of the grinding-stock discharge pipe 27 that passes through the covering 17 and is held in the clamping flange 29 is not variable in the direction of adjustment 40 and then fixable by screws, but that it is drivable by a swing drive 42 to reciprocate in the direction of adjustment 40 .
  • the clamping flange 29 is of course not joined to the covering 17 by means of screws, but rests thereon so that the grinding-stock discharge pipe 27 is movable to and fro in the oblong hole 28 .
  • the suction port 33 of the embodiment according to FIGS. 1 to 3 is radially adjustable by lateral distances for reduction of wear on the solid disk 34 , this radially reciprocating motion is implemented continuously by the swing drive 42 in the embodiment of FIG. 4, as a result of which the suction slot 36 is kept permanently clear.
  • the level to which the grinding chamber 37 is filled with auxiliary grinding bodies 38 is constant.
  • the auxiliary-grinding-body loading is approximately 90 percent.
  • pumpable i.e., free flowing grinding stock is supplied in the direction of feed 43 through the grinding-stock feed pipe 24 and into the grinding chamber 37 .
  • high-intensity motion of the mix of grinding stock and auxiliary grinding bodies takes place in a known manner in the grinding chamber 37 , inciting a process of intensive grinding and dispersion.
  • This process of grinding and dispersion depends on the density of packing of the auxiliary grinding bodies 38 in the grinding chamber 37 i.e., on the working volume in which the auxiliary grinding bodies 38 are distributed during the grinding process.
  • Corresponding interadjustment of the grinding-stock feed pump 26 and the grinding-stock discharge pump 39 by means of a control unit 52 helps regulate the level of the surface 44 of the grinding stock.
  • a level indicator 53 which permanently monitors the level of the surface 44 and transmits it to the control unit 52 . As seen in FIGS. 1 and 4—it can be approximately level with, or reach beyond, the top side of the solid disk 34 i.e., of the uppermost agitating tool 34 .
  • Auxiliary grinding bodies 38 are available in this area above the solid disk 34 ; they are only slightly accelerated by the agitator 12 so that the grinding and dispersing effect is strongly reduced. Consequently, the working volume of the grinding chamber is reduced due to the fact that part of the auxiliary grinding bodies 38 are withdrawn from the active grinding process. If however—as seen in FIGS. 1 and 4—the surface 44 is intended to be approximately flush with the solid disk 34 , then the discharge pump 39 must work at a slightly greater capacity than the feed pump 26 .
  • the embodiment according to FIG. 5 differs from the embodiments described above in that the grinding-stock discharge pipe 27 ′ and the solid disk 34 ′, and thus the separating device 35 ′, are jointly variable vertically in the direction of the agitator axis 22 .
  • the solid disk 34 ′ which is non-rotatably, but axially displaceably arranged on the agitator shaft 13 , is joined to a control-rod mechanism 45 , which is passed outwards through the covering 17 in a sliding bearing 46 on the covering 46 .
  • the control-rod mechanism 45 is joined to the discharge pipe 27 ′ which is parallel thereto.
  • a pressurized piston-cylinder drive i.e., a linear drive 47
  • Corresponding actuation of the linear drive 47 in the direction of adjustment 48 helps adjust the suction port 33 , together with the solid disk 34 ′, in the direction of adjustment 48 i.e., parallel to the agitator axis 22 , whereby the working volume of the grinding chamber is modified in the same way.
  • corresponding regulation of the grinding-stock feed pump 26 and of the grinding-stock-discharge pump 39 will influence the level to which the grinding chamber 37 is filled, regardless of the position of the separating device 35 ′.
  • the discharge pump 39 can permanently be operated at a higher capacity than the feed pump 26 , whereby the surface 44 is kept constantly level with the separating device 35 .
  • the exemplary embodiment according to FIGS. 6 and 7 differs from the embodiments described above in that the separating device 35 ′′ is designed for the suction port 33 ′′ to form a suction slot 36 ′′ towards the inside wall 49 of the grinding container 1 .
  • the grinding-stock discharge pipe 27 ′′ is vertically displaceable—as in the exemplary embodiment of FIG. 5.
  • the separating device 35 ′′ is shifted vertically in the same way as in the embodiment of FIG. 5; modification of the working volume of the grinding chamber takes place in the same way.
  • the uppermost agitating tool 14 need not be a plane solid disk, there being no need for it to form a closed surface opposite the suction port 33 ′′. It can be provided with penetration openings 15 as the rest of the agitating tools 14 .
  • FIG. 6 does not show the grinding-stock feed pipe.
  • the mode of operation is the same as in FIG. 5.
  • the separating device 35 ′′ is formed between the suction port 33 ′′′ and the agitator shaft 13 ′′′, the diameter of which may be reinforced in this area by a counter ring 50 .
  • Vertical displacement of the grinding-stock discharge pipe 27 ′′′ in the direction of adjustment 48 takes place in the same way as in the embodiments of FIGS. 5 and 6, 7 .
  • the counter ring 50 has an external cylindrical surface 51 , with a suction slot 36 ′′′ being formed between the surface 51 and the suction port 33 ′′′.
  • FIGS. 9 and 10 largely corresponds to that of FIG. 1.
  • the entire control system can be designed as explained in connection with FIG. 4.
  • the separating device 35 ′′′′ differs substantially.
  • the uppermost agitating tool 14 ′′′′ has a smaller diameter and is peripherally equipped with spokes 54 which are directed outwards and upwards.
  • the outer ends of the spokes 54 have a ring 55 which is connected for rotation with the agitator shaft 13 .
  • Disposed above the ring 55 is an annular suction port 33 ′′′′ of hard elastic material, for instance rubber, of a cross-sectional shape of an upside down U which comprises a discharge duct 56 .
  • the discharge duct 56 is connected to the grinding-stock discharge pipe 27 and has a grinding-stock opening 57 that is directed towards the ring 55 .
  • Two wearing rings 58 are mounted on the suction port 33 ′′′′ on either side of the grinding-stock opening 57 , with a wearing ring 59 that is mounted on the ring 55 being allotted to the wearing rings 58 .
  • these wearing rings 58 , 59 which are arranged in pairs, define a suction slot 36 ′′′′ of the width s described above.
  • the suction port 33 ′′′′ is stationary, in particular non-rotatable, in relation to the grinding chamber 1 .

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
US10/327,206 2001-12-24 2002-12-24 Agitator mill Abandoned US20030116663A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10163995 2001-12-24
DE10163995.3 2001-12-24

Publications (1)

Publication Number Publication Date
US20030116663A1 true US20030116663A1 (en) 2003-06-26

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ID=7710893

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US10/327,206 Abandoned US20030116663A1 (en) 2001-12-24 2002-12-24 Agitator mill

Country Status (12)

Country Link
US (1) US20030116663A1 (zh)
JP (1) JP2003190828A (zh)
KR (1) KR20030055119A (zh)
CN (1) CN1428201A (zh)
BR (1) BR0205483A (zh)
CA (1) CA2413817A1 (zh)
DE (1) DE10253791A1 (zh)
MX (1) MXPA02012534A (zh)
PL (1) PL199138B1 (zh)
RU (1) RU2002134326A (zh)
TW (1) TW562698B (zh)
ZA (1) ZA200209737B (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040256505A1 (en) * 2001-11-22 2004-12-23 Bernard De Haas Method for evaluating the filling rate of a tubular rotary ball mill and device therefor
AU2004203593B2 (en) * 2003-08-22 2009-02-19 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Agitator mill
CN113210082A (zh) * 2021-04-29 2021-08-06 黑龙江省镈浩石墨有限责任公司 一种球形石墨生产用砂磨设备及砂磨方法
CN114505159A (zh) * 2022-02-24 2022-05-17 上海太洋科技有限公司 一种纳米氧化铍的制备方法
CN115888506A (zh) * 2022-11-07 2023-04-04 江西省修水赣北钨业有限公司 一种具有过滤效果的仲钨酸铵生产用调浆釜
US11731139B2 (en) * 2013-12-20 2023-08-22 Netzsch Trockenmahltechnik Gmbh Machine having a cantilever-mounted rotor

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100773493B1 (ko) 2006-06-05 2007-11-05 유니원기연(주) 원심분쇄밀
DE102010052656B4 (de) * 2010-11-26 2025-08-21 Netzsch-Feinmahltechnik Gmbh Hydraulische mahlkugelzu- und abfuhr für rührwerkskugelmühlen
CN103861696A (zh) * 2012-12-12 2014-06-18 江苏森美铝颜料有限公司 一种球磨机的加气系统
CN103861699A (zh) * 2012-12-12 2014-06-18 江苏森美铝颜料有限公司 一种增压出料系统
CN103657804A (zh) * 2013-11-22 2014-03-26 中国科技开发院广西分院 一种卧式强化膨润土改性搅拌球磨反应器
KR101420350B1 (ko) * 2013-11-28 2014-07-16 주식회사 디엔텍 분쇄기
CN106111270B (zh) * 2016-07-09 2018-04-13 青岛大学 一种多浆片的研磨化工机械系统
CN106179627B (zh) * 2016-07-09 2019-07-12 青岛大学 一种送料速度模糊控制的研磨化工机械系统
CN109304245A (zh) * 2018-10-25 2019-02-05 南京工业职业技术学院 一种滚筒式饲料破碎搅拌机

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233835A (en) * 1961-12-06 1966-02-08 Sevin Roger Joseph Apparatus for milling and dispersing substances in liquid media
US3243128A (en) * 1963-08-05 1966-03-29 Morehouse Cowles Inc Method and apparatus for dispersing pigments in liquid vehicles
US3311310A (en) * 1964-06-20 1967-03-28 Draiswerke Gmbh Stirring mill
US3672580A (en) * 1970-12-08 1972-06-27 Ferrox Iron Ltd System for feeding grinding media to continuous attrition mill
US3844490A (en) * 1972-12-06 1974-10-29 G Schold Apparatus for dispersing finely divided solid particles in a liquid vehicle
US3904133A (en) * 1973-09-28 1975-09-09 Netzsch Maschinenfabrik Separation device for separating grinding elements and ground suspension in an agitator mill
US4998678A (en) * 1988-11-18 1991-03-12 Walter Eirich Agitator ball mill
US5361996A (en) * 1991-12-20 1994-11-08 Sala International Ab Method and arrangement for finely-grinding minerals
US5624080A (en) * 1994-09-09 1997-04-29 Evv-Vermogensverwaltungs-Gmbh Agitator mill
US5785262A (en) * 1997-03-13 1998-07-28 Tippett; Jerome P. Apparatus FPR dispersing finely divided solid particles in a liquid vehicle
US6585180B2 (en) * 2000-05-18 2003-07-01 Inoue Mfg., Inc. Pipeline beads mill and dispersing system having the pipeline beads mill

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3233835A (en) * 1961-12-06 1966-02-08 Sevin Roger Joseph Apparatus for milling and dispersing substances in liquid media
US3243128A (en) * 1963-08-05 1966-03-29 Morehouse Cowles Inc Method and apparatus for dispersing pigments in liquid vehicles
US3311310A (en) * 1964-06-20 1967-03-28 Draiswerke Gmbh Stirring mill
US3672580A (en) * 1970-12-08 1972-06-27 Ferrox Iron Ltd System for feeding grinding media to continuous attrition mill
US3844490A (en) * 1972-12-06 1974-10-29 G Schold Apparatus for dispersing finely divided solid particles in a liquid vehicle
US3904133A (en) * 1973-09-28 1975-09-09 Netzsch Maschinenfabrik Separation device for separating grinding elements and ground suspension in an agitator mill
US4998678A (en) * 1988-11-18 1991-03-12 Walter Eirich Agitator ball mill
US5361996A (en) * 1991-12-20 1994-11-08 Sala International Ab Method and arrangement for finely-grinding minerals
US5624080A (en) * 1994-09-09 1997-04-29 Evv-Vermogensverwaltungs-Gmbh Agitator mill
US5785262A (en) * 1997-03-13 1998-07-28 Tippett; Jerome P. Apparatus FPR dispersing finely divided solid particles in a liquid vehicle
US6585180B2 (en) * 2000-05-18 2003-07-01 Inoue Mfg., Inc. Pipeline beads mill and dispersing system having the pipeline beads mill

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040256505A1 (en) * 2001-11-22 2004-12-23 Bernard De Haas Method for evaluating the filling rate of a tubular rotary ball mill and device therefor
US7347113B2 (en) * 2001-11-22 2008-03-25 Magotteaux International Sa Method for evaluating the filling rate of a tubular rotary ball mill and device therefor
AU2004203593B2 (en) * 2003-08-22 2009-02-19 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Agitator mill
US11731139B2 (en) * 2013-12-20 2023-08-22 Netzsch Trockenmahltechnik Gmbh Machine having a cantilever-mounted rotor
CN113210082A (zh) * 2021-04-29 2021-08-06 黑龙江省镈浩石墨有限责任公司 一种球形石墨生产用砂磨设备及砂磨方法
CN114505159A (zh) * 2022-02-24 2022-05-17 上海太洋科技有限公司 一种纳米氧化铍的制备方法
CN115888506A (zh) * 2022-11-07 2023-04-04 江西省修水赣北钨业有限公司 一种具有过滤效果的仲钨酸铵生产用调浆釜

Also Published As

Publication number Publication date
CN1428201A (zh) 2003-07-09
TW562698B (en) 2003-11-21
TW200301161A (en) 2003-07-01
BR0205483A (pt) 2004-07-27
PL357989A1 (en) 2003-06-30
MXPA02012534A (es) 2004-09-03
PL199138B1 (pl) 2008-08-29
ZA200209737B (en) 2003-06-11
RU2002134326A (ru) 2004-12-20
CA2413817A1 (en) 2003-06-24
JP2003190828A (ja) 2003-07-08
KR20030055119A (ko) 2003-07-02
DE10253791A1 (de) 2003-07-03

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